Base grinding-machine wheel



Patented May 15,1928.

, :tarea-4f skiers@ ePA.'f-Eaiff 1-erric .HARRYL iirrims,v or morena-forno, AssIGNoR To 'rmi AME-RicanrLooRsURrAcrNG i f MACHINE comrimpor'ToLEDdaoHIa Y i v'Basri Gemplus-Macallan WHEEL.

'l l Application ld .Tune 28,

`The present inventionv relates to an iin' proved base grinding machine Wheel of thev fastened by a retaining nut on the end oi a drivinr spindle.

Incidentally, this abrasive element or grinding Wheel is formed at its inner end With a lined bore for passage of the yscrew' threaded end of the spindle. -At the opposite end it is formed With a socket to accommodate the retaining nut and vto accom- "modate the socket Wrench which is `em- Cil ployed in applying and removingvthe nut. lThe prominent thought here, is to provide a new form or embodimentof base grinding machine Wheel of such construc- .tion as to provid-e a dependable and etticient substitute for the old type of Wheel.v

i type is susceptible of inexpensive manufaca The improved ivheel possesses outstanding and structural advantagesin that itis simple and inexpensive to construct, sturdy in construction, and a radical departure vfrom the present type of machine wheels universally used on base and Wall polishing machines. p

rlhe structural di 'l'ereiices serving to produce the alleged features ot' the novelty and advantages will become quite evident from the following description and drawings. y

In the drawings Figurel is a central longitudinal section through an improved base grinding machine Wheel constructed in accordance with the present invention. y Fig.v 2 is an endA elevation looking in `a direction from left to 'right in Fig. 1.

Fig. 3 isa View like Fig. 1 showing the old style Wheel and indicating full proportions in dotted lilies, and diminished proportions in full lines in order to give configuration after it has Worn orbecome practically useless.

i927." 'semina 202,062. y' i Fig. 4 is kva view like F ig. 3,"sliowing the full and diminished proportions of the improved type oit" Wheely as compared with the oldtype.

f Considering now Athe device iin" detail, ift will be observed that the reference characterr l5 `represents a' substantially cylindrical block or body,v composed of a suitable' abra.-V sive vto adapt it yfor grinding andl polish-v ingr Work. j Firnilyembeddedin this fbody 5 is a leadco'revG v-Wliicliyin external configuration, is somewhat Vbullet-shaped;` This bore Ais centrally located and `has itszreduced or tapered end 7 extending slightly beyond the longitudinal ceiiterof the abraf sive block andi-tei-minating in spaced relar tion from the outer end 8 of this block.

vThe'opposite end otthis' core is disposed core andhas its screw threaded opening in alinement .With these sockets. y,

It mightbe added here, that a core lof this ture in that it can be cast and turned 'to shape the mandrel has ascrevv threaded end andA Whether or n'ot't-he nut" is placed on the screw threaded end in a mannerltoalloiv a portion of the screw threaded end to project beyond the nut. W'heii tliecore is thus :formed on a nut'equipped screw threaded mandrel, the projecting screw vthreaded end of the mandrel leaves `the screw threaded counter-socket 12 and the smooth portion-of the mandrel, forms the smooth Walled socket 11. The nut previously on the mandrel is left embedded in the core after the core `is removed from the mandrel.

yon a /maiidrel (not shown) Whether or Anot ice Beforek further, discussing this improved base Wheel, attention is invited to Fig. 3, wherein itL will be observed that the refer` ence character 14 designates 'generallyt-he old style or type Wheel. i y As intimated at the outset of the description, this comprises acylindrical block 15 having a metal lined bore 16 Which Will accommodate the ,customary driving spindle nov which is placed Ain position and removed by a socket Wrench.`

v pa: Quinny yf The recessr also accommodates the socket,

Wrench. In order vto "appreciate the re novelty 'ofthis invention, the oid style Wheel Slulldfb'jfimidWifhlhehew Style, ii'hql j m1aSaliih,Wrii'g properties; The-A new vWheel kis a raidic'jail partnre -from the present type Wheel's uni'- 'yersallfynsdg aside from tbe'adap't'ability, the. life of it)v has been .materially lengthened. 1.xmeqdphdab-19 conplxfglis; aorde'd yartienla'rly by the presence' of the'ein ec de dnut Handit ie co nnter socket forthreadedi connection with they eX# tended dof the,spindle,v v described my invention', What 'ilam sleiv, is?" t MA) .lvr4 glldig..maghi@ Wheel Of the. character described comprising a body, a core orinatiofli af siibstantia base grindingmachine Wheel comprising l meer L. 

